Rodrigues, L., A. Maio, F. Freitas, J. Bastos, and E. Ramalheira. “Charlson Comorbidity Index Score and the Odds of Death in COVID-19 Patients”. Journal of Statistics on Health Decision, Vol. 4, no. 1, July 2022, pp. 23-24, doi:10.34624/jshd.v4i1.28699.